Spring tooth sulky cultivator



(No Model.) 2 Sheets--Sheet 1- Y C. LA DOW.

SPRING TOOTH SULKY GULTIVATOR. No. 269,069. Patented Deo. 12, 1.882.

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SPRING TOGTH SULKY GULTIVATOR. No. 269,069. Patented Deo. 12, 1882.

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UNITED STATES PATENTA OFFICE.

`cnAItLns LA Dow, OFfALBANY, NEW YORK.

.SPRING-TOOTH SULKY-CULTNATOR.

SPECIFICATION forming pertllof Letters Patent No. 269,069, dated December 12, 1882.

Application filed February 13, 1882. (No model.) V

To all whom it may concern Be it known that L CHARLnsLA Dow, a citizen ot' the 'United States, residing in the city and county of Albany, and State of New York, have invented a new and useful Improvement in Spring-Tooth Sulky-Cultivators, of which the following is a specification.

This invention relates to that class of cultivators which employ spring-teeth for working soil; and it consists, first, in the combination of a rocking bar, a tooth-holder adapted to be clamped to the bar and held relatively thereto by frictional contact, and a Y spring-tooth clamped in a recess in the holder and sustained against upward strain by the upper portiouof the holder; second, in the combination ot' a rocking bar, a spring-tooth, and a tooth-holder consisting of two parts clamped to the supporting-bar and held by frictional contact therewith, the upper part of the holder being provided with a rearward extension, which sustains the spring-tooth against undue upward pressure; third, in the combination'of a draft-frame, ground-wheels, an axle rocking in the hubs ofthe wheels and carrying adjustable vibratory spring-teeth, a second bar carrying vibratory spring-teeth, and lever mechanism connecting the rocking-axle toothbar with the second bar to impart uniform movements thereto, the spring-teeth on both the axle and the bar being capable of adjustment in a direction around the same to vary the penetration of their points.

Referring to the drawings, Figure 1 represents a top view of my invention. Fig. 2 represents a side view ofthe same. Fig. 3 represents an end view of the tooth-bar, the manneriof clamping the tooth-h older thereto, and alsov the manner of attaching the tooth to the holder.' Fig. 4 represents a rear view of a section of a toothbar, showing the tooth-holder mounted thereon and the socket or recess in which the tooth is'. mounted in the holder.

. the four bars G C G G, to which are journaled,

in suitable bearings, the axle or tooth bar B, and the tooth-bars B B.

bis a tooth holder or socket, which is ad-` justably secured to the tooth-bars by means of clamp-bolts, which permit the teeth to be set at any desired angle relatively to their bars, and also to the adjacent series mounted on the lother bars, and is also constructed to be moved `it is desired to use the machine asa cnltivator of rowed crops. This construction obviates the necessity for the removal of several teeth, necessary to other machines, when used for such purpose, while the grouping of the teeth enables the machine to work the ground more thoroughly on each side ot' a row of plants than if the teeth should remain in their normal lateral position on the frame.

a to c are the spring-teeth, which are arranged in series or rows transversely across the line of draft, each series being mounted oli its bar B or B. 4The bars B B' are each provided with a lever, au, clamped thereto in the same manner as the tooth-holders. The axle or bar B has a hand-lever, F, fastened thereto in the same manner as lever rc to its bar B. This bar F performs the same office to its bar B as do the levers x x to their bars B B. The levers au :c and F are connected together by link at, so that when the lever F is rocked -it moves the bar'B through the line of the center ofthe wheel-hubs, the link n through its levers .r fr, causing the bars B B to move in concert with the axle-bar. The teeth a a a are adjustably secured to the tooth-holder b by means of one of the clamping-bolts passing through the holder and the tooth'. This tooth is tted in a recess inthe holder, which prevents the tooth moving relatively to the holder. The upper jaw of the holder has an extension, c', which extension -prevents the tooth from being unduly strained when passing over large obstructions.

The pole D is pivoted between the center bars, C C. To the forward end of each ofsaid bars the stirrup T is pivoted. u is a bracket bolted securely to the pole. Vis a crank-lever, the verticalportion of which is provided with a threaded screw, which enters a corresponding screw or nut in the upper part of the stirrup T. The lower part of the lever V 4passes IOO through a hole formed in the bracket c. The lower part of said lever V is pierced with two holesone above and one below the bracket fv. These holes are each provided with a pin or key of ordinary construction, which allows the lever V to be turned freely in its threadedscrew bearings, carrying the pole with it, the lower pin in the lever V serving to lift the pole and the upper pin in said lever depressing it. The stirrup-l is pivoted. to the pieces C O in order, that it may remain at a uniform angle relatively to the pole during all of its vertical adjustment up and down.

The frames C, B, and B are somewhat ilexible, being journaled together by loose bearings, which permit the rocking of the bars B' within them. l The braces G Gare fastened to the pole D and to the frame C U to prevent the frame foin being racked out of shape.

It will be observed that the arrangement of the levers m x and F with thelinknand toothbars B and B B permit the teeth in all the series to be simultaneously varied, and the lever mechanism connected tothe poles permits them all to be set at equal degrees of penetration at any desired depth, and without varying the vertical position ot' thetooth-bars themselves, and also allowing the axle to be utilized as a tooth-bar in thisconstruction of my invention. This arrangement of teeth and levers and adjustment of pole coact to produce not only a uniform penetration of all the teeth at any depth desired, but also a uniform vibration of all the teeth in each series. The teeth in one series may be angularly adjusted relatively to the teeth in another either by loosening the lever x and turning the toothbar B as desired, and retightenihg said lever x, or by loosening the tooth-holders themselves and adjusting the teeth and holders relatively to their bar. to be clamped to .bars made of either Wood, metal, or other material, and theymay be constructed with teeth to bite into the surface of the bars; or they may be used smooth and held by friction only.

A tooth-rack, R, is fastened io the frame U, and adapted for engagement with the pawl w of the lever F. "Ihispawland rack will hold the teeth in any desired position as set.

The seat S is mounted on the machine in the usual manner.

t t are collars on the axle B, which serve to These tooth-holders are adapted j keep the wheels a a at a proper distance from the end pieces, C G.

t t are collars which assist theteeth a in holding the pieces C from slidinglaterally along the bars B B, as described.

The rear tooth at the center of the machine i anism, as shown in Letters Patent grantedto A. J. Stewart, dated the.v 4th day of Novem-` ber, 1873, and numbered 144,236. 'Therefore I do not claim such an invention in its broadest sense.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. The. combination ofa rocking bar, a toothholder adapted to be clamped to the bar and held relatively thereto by frictional contact, and a spring-tooth clamped in a recess in the holder, and sustained against upward strain by the upper portion of the holder, substantially as described.

2. 'lhe .combination of a rocking bar, a spring-tooth, and a tooth-holder consisting of two parts clamped to the supporting-bar and held by frictional contact therewith, the upper part of the holder being provided with a rearward extension, which sustains the springtooth against undue upward pressure, sub- 9o stantially as described. 3. The combination ot' adraft-frame, groundwheels therefor, an axle rocking in the hubs of the wheels and carrying adjustable vibratory spring-teeth, a second bar carrying vibratory spring-teeth, and lever mechanism connecting the rocking axletooth bar with the second tooth-bar toimpart uniform movements thereto, the spring-teeth on both the axle and the bar being capable of adjustment in a direction around the same to vary the penetration ot' their points, substantially as described.

CHARLES LA DOW. Witnesses:

RICHARD P. DUMARY, WM. W. DIAMOND. 

